<!-- <template>
  <div >
    <router-view></router-view>
  </div>
</template>
<script>
export default {
  name: 'App',
  components: {
   
  },
  methods: {
   
  },
}
</script>

<style>

</style>
 -->
 <template>
  <div id="app">
    <router-view v-if="isRouterAlive"></router-view>
</div>
</template>
<script>
  export default {
      name: 'App',
      provide () {    //父组件中通过provide来提供变量，在子组件中通过inject来注入变量。                                             
          return {
              reload: this.reload                                              
          }
      },
      data() {
          return{
              isRouterAlive: true                    //控制视图是否显示的变量
          }
      },
      methods: {
          reload () {
              this.isRouterAlive = false;            //先关闭，
              this.$nextTick(function () {
                  this.isRouterAlive = true;         //再打开
              }) 
          }
      }
  }
</script>

